EP 1179493 A3 20030122 - Method and apparatus for controlling piezoelectric vibratory parts feeder
Title (en)
Method and apparatus for controlling piezoelectric vibratory parts feeder
Title (de)
Verfahren und Vorrichtung zur Steuerung eines piezoelektrischen Schwingungsgebers
Title (fr)
Procédé et dispositif pour commander un dispositif d'alimentation à pièces vibrantes piezoéléctriques
Publication
Application
Priority
JP 2000244147 A 20000811
Abstract (en)
[origin: EP1179493A2] An apparatus for controlling a piezoelectric vibratory parts feeder (10) comprises a piezoelectric vibrating unit (14) provided with a piezoelectric vibrating element (16) that vibrates at a predetermined frequency, a bowl (12) adapted to discharge parts accommodated therein by means of the piezoelectric vibrating unit (14), a driving circuit (20) for driving the piezoelectric vibrating element (16), and a control unit (22) for outputting a driving signal to the driving circuit (20) to cause a predetermined driving. The control is performed by idling the driving of the piezoelectric vibrating element (16) temporarily at every predetermined driving cycles thereof and controlling the vibration of the piezoelectric vibrating element (16) based on a signal obtained therefrom by its piezoelectric effect during the idling period, for instance, based on a phase difference between a waveform of this signal and the driving signal of the driving circuit. <IMAGE>
IPC 1-7
IPC 8 full level
B65G 27/32 (2006.01); B06B 1/06 (2006.01); G05D 19/02 (2006.01); H01L 41/09 (2006.01)
CPC (source: EP KR US)
B06B 1/06 (2013.01 - KR); G05D 19/02 (2013.01 - EP US)
Citation (search report)
- [AD] US 5472079 A 19951205 - YAGI SUSUMU [JP], et al
- [A] EP 0823680 A2 19980211 - YKK CORP [JP] & JP H1049237 A 19980220 - YKK CORP
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1179493 A2 20020213; EP 1179493 A3 20030122; EP 1179493 B1 20040721; CN 1245672 C 20060315; CN 1338668 A 20020306; DE 60104371 D1 20040826; DE 60104371 T2 20050811; JP 2002060041 A 20020226; KR 100819598 B1 20080404; KR 20020013723 A 20020221; TW 522052 B 20030301; US 2002024268 A1 20020228; US 6465932 B2 20021015
DOCDB simple family (application)
EP 01306844 A 20010810; CN 01124969 A 20010810; DE 60104371 T 20010810; JP 2000244147 A 20000811; KR 20010046765 A 20010802; TW 90119038 A 20010803; US 92040601 A 20010802